Analysis of Vibration Severity of Paddy Thresher of Centrifugal Type
Keywords:
Centrifugal Fan, Impeller Speed, Paddy Thresher, Velocity Amplitude, Vibration SeverityAbstract
A common problem occurs on rotating machines is vibration. This vibration would affect machine performance. This vibration should be tested and analyzed for ensuring machine runs smoothly that can extend the life of the machine. Therefore, the purpose of this research was to analyze of vibration severity of the paddy thresher with centrifugal type. The experimental results indicated that the velocity amplitude of the vertical direction is higher than the velocity amplitude of vertical and horizontal at all levels of the impeller speeds except in the range of 400 to 800 RPM. The highest velocity amplitude reached about of 7.2 mm/s in the vertical direction at 1120 RPM. Based on the statistical analysis of the RMS, crest factor, and shape factor methods, the operating condition for ensuring the equipment run accordingly the criterion is good or allowance then it is recommended choosing in the range of the impeller speed of 480 to 800 RPM.
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